60×20

60x20 typically refers to a common size designation for lumber or other building materials. The "60" usually represents the length in inches, and the "20" signifies the nominal width in inches. This dimension is less common for dimensional lumber like 2x4s or 2x6s, which are typically sold in standard nominal dimensions like 2 inches by 4 inches or 2 inches by 6 inches. Instead, 60x20 might be found in sheet goods such as plywood or particleboard, or in custom-cut lumber for specific projects. The actual dimensions of a piece of lumber, especially after milling, are usually smaller than the nominal size. For example, a nominal 2x4 is actually 1.5 inches by 3.5 inches. Therefore, a 60x20 piece would likely be slightly less than 60 inches long and 20 inches wide. The "20" inch width is a less standard measurement for many common construction materials, suggesting it might be used in specialized applications or for larger panelized systems. The 60-inch length provides a substantial span, useful for creating larger surfaces or structural elements. When encountering a 60x20 designation, it is always advisable to verify the actual dimensions and the material's intended use with the manufacturer or supplier.